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Degreasing agent of polymer flooding produced wastewater and preparation method of degreasing agent

A technology of degreasing agent and polymer, which is applied in the field of degreasing agent and its preparation of sewage produced by polymer flooding, and can solve the problems of unsuitable degreasing treatment of sewage containing polymer, complex and changeable operation methods, poor demulsification effect, etc. problem, to achieve high degreasing efficiency, improve degreasing efficiency and reduce viscosity

Active Publication Date: 2017-03-15
HENAN ZHENGJIA ENERGY ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex and changeable methods of ground implementation, the composition of sewage has obvious regional and timeliness
[0006] Patent ZL201410455664.7 "A degreaser for oilfield binary compound flooding produced sewage" uses acryloyloxyethyl dimethylamine, chloroalkane, acrylamide, N,N'-methylenebis Acrylamide, ammonium persulfate and sodium sulfite reacted. The degreasing agent has the characteristics of less dosage, low cost, high degreasing rate, high degreasing efficiency, simple preparation and low cost. However, the degreasing agent belongs to Reverse demulsifier, the demulsification effect on oil-in-water emulsion is poor, and at the same time, the degreasing agent is not suitable for degreasing treatment of sewage containing poly

Method used

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  • Degreasing agent of polymer flooding produced wastewater and preparation method of degreasing agent
  • Degreasing agent of polymer flooding produced wastewater and preparation method of degreasing agent
  • Degreasing agent of polymer flooding produced wastewater and preparation method of degreasing agent

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Effect test

Embodiment 1

[0030] Embodiment 1: Degreaser C 1 and its preparation method

[0031] (1) Degreaser C 1 The composition and components are as follows:

[0032] The degreasing agent is formed by reacting n-decyl aldehyde with epoxybromobutane under the catalysis of boron trifluoride ether solution to form an intermediate, and then reacting with pyrrolidone to form a cationic degreasing agent. Its molecular formula is as follows:

[0033]

[0034] Wherein, the molar ratio of n-decyl aldehyde, epoxybromobutane and pyrrolidone is 1.0:0.5:0.5.

[0035] (2) Degreaser C 1 The preparation method is as follows:

[0036] ①Put a three-neck flask with a stirring rod into a water bath, add 1mol of n-decyl aldehyde, then add 2340g of acetonitrile, heat up to 35°C, stir at a stirring rate of 350rpm for 25min, then add 0.156g of acetonitrile with a mass concentration of 30% Put 0.5mol epoxybromobutane in the constant pressure dropping funnel, control the dropping rate to 3 drops / min, raise the tempe...

Embodiment 2

[0039] Embodiment 2: Degreaser C 2 and its preparation method

[0040] (1) Degreaser C 2 The composition and components are as follows:

[0041] The degreasing agent is formed by reacting n-decyl aldehyde with epoxybromobutane under the catalysis of boron trifluoride ether solution to form an intermediate, and then reacting with pyrrolidone to form a cationic degreasing agent. Its molecular formula is as follows:

[0042]

[0043] Wherein, the molar ratio of n-decyl aldehyde, epoxybromobutane and pyrrolidone is 1.0:1.0:1.1.

[0044](2) Degreaser C 2 The preparation method is as follows:

[0045] ①Put a three-necked flask with a stirring rod into a water bath, add 1mol of n-decyl aldehyde, then add 3250g of acetonitrile, heat up to 40°C, stir at a stirring rate of 250rpm for 15min, then add 0.54g of 30% mass concentration Put 1.0mol epoxybromobutane into the constant pressure dropping funnel, control the dropping rate to 3 drops / min, raise the temperature to 62°C, stir ...

Embodiment 3

[0048] Embodiment 3: Degreaser C 3 and its preparation method

[0049] (1) Degreaser C 3 The composition and components are as follows:

[0050] The degreasing agent is formed by reacting n-decyl aldehyde with epoxybromobutane under the catalysis of boron trifluoride ether solution to form an intermediate, and then reacting with pyrrolidone to form a cationic degreasing agent. Its molecular formula is as follows:

[0051]

[0052] Wherein, the molar ratio of n-decyl aldehyde, epoxybromobutane and pyrrolidone is 1:1.25:1.5.

[0053] (2) Degreaser C 3 The preparation method is as follows:

[0054] ①Put a three-necked flask with a stirring bar into a water bath, add 1mol of n-decyl aldehyde, then add 3900g of acetonitrile, heat up to 50°C, stir for 40min at a stirring rate of 400rpm, and then add 0.78g of acetonitrile with a mass concentration of 30% Put 1.25mol epoxybromobutane in the constant pressure dropping funnel, control the dropping rate to 4 drops / min, raise the ...

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Abstract

The invention belongs to the technical field of oil field wastewater treatment, and specifically relates to a degreasing agent of polymer flooding effluent and a preparation method thereof. The degreasing agent is prepared by reacting n-capric aldehyde with epoxy bromobutane under the catalysis of a boron trifluoride diethyl etherate solution to generate an intermediate, and then reacting with pyrrolidone to generate the cationic type degreasing agent. The molar ratio of n-capric aldehyde, epoxy bromobutane to pyrrolidone is 1.0: (0.5 to 1.25): (0.5 to 1.5), preferably 1.0: 1.0: 1.1. The degreasing agent disclosed by the invention has the characteristics of simple preparation technology, low cost, high adaptability and good degreasing effect, and the degreasing reaches up to more than 97%. Therefore, the degreasing agent can be widely applied to a degreasing technology of oil field polymer flooding effluent.

Description

technical field [0001] The invention relates to a degreasing agent for oil field sewage treatment, in particular to a degreasing agent for polymer flooding produced sewage and a preparation method thereof. Background technique [0002] Polymer flooding technology has achieved good oil-increasing effect. Polyacrylamide (PAM) is contained in polymer flooding. Due to the similarity between PAM and emulsifier molecules, the molecules in the system where PAM exists are concentrated at the oil-water interface, forming a composite film with greater strength and good elasticity together with emulsifier molecules. Based on the above characteristics, the oil content index of the wastewater produced by polymer flooding is relatively high. [0003] With the expansion of the application scale of polymer flooding, the following problem is the treatment of polymer flooding sewage. The sewage of polymer flooding not only has high oil content, but also contains a large amount of polymers. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/40C02F1/54C02F103/10
Inventor 吕小芳
Owner HENAN ZHENGJIA ENERGY ENVIRONMENTAL PROTECTION CO LTD
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